Re: Use of Japanese terminology...
Our dojo puts a lot of emphasis on Japanese custom and language. I enjoy it. I find Aikido class not only a time to learn about Aikido, but also an opportunity to learn a little something about Japanese language and culture. I also think the universalism of having a language central to the art is consistent with the whole premise of Aikido being a unifying art, etc.
Similarly I am also Jewish, and though I am not supremely observant, I very much support the preservation of Hebrew language during worship, etc. There is a cohesiveness that language can lend to a group, even if that language is just preserved for certain terms, etc.